The Smartwool PhD Outdoor Medium Crew Socks are SmartWool's best hiking, trekking outdoor sock. Combining athletic science and SmartWool quality, these PhD socks support and cushion your feet while wicking moisture and controlling temperature. These crew length socks feature SmartWool cushioning in the critical impact zones for added protection and durability. Designed with SmartWool's new 4-Degree Elite Fit System, the SmartWool PhD Outdoor Medium Crew Socks work with the mechanics of the athlete's foot and features even better stretch and recovery for an exceptional fit in critical areas. The SmartWool PhD Outdoor Medium Crew Socks are perfect for aggressive treks with heavy loads.
New 4 Degree Elite Fit System uses two elastics for greater stretch and recovery to keep the sock in place
Strategically placed mesh ventilation zones provide ventilation for temperature and moisture management
2x1 ribbed welt, 1x1 ribbed leg
72% Merino Wool, 26% Nylon, 2% Elastane
Patent pending ReliaWool Technology in high impact areas provides the longer lasting protection to keep feet comfortable
Flat knit durable toe seam for high burst strength